Locking nut with plating layer

Abstract

The locking nut comprises a nut body, a threaded sleeve, an inner shrinkage groove, a reinforcing body, a positioning groove, a spring, a base, a conical sleeve and an anti-skid protrusion, the nut body and the threaded sleeve are integrally arranged together, the inner shrinkage groove is formed between the nut body and the threaded sleeve, and the reinforcing body is arranged between the inner shrinkage groove and the threaded sleeve. The reinforcing body is arranged on the groove top of the inner shrinkage groove; the spring is arranged in the positioning groove formed in the nut body, the lower end of the spring is fixedly connected with the base, the conical sleeve and the anti-skid protrusion are integrally arranged on the base, and the conical sleeve is located in the inner shrinkage groove. Dynamic locking is achieved through the combination of the threaded sleeve and the conical sleeve. During tightening, the conical sleeve goes deep into the internal shrinkage groove and acts with the inclined surface of the threaded sleeve to shrink, so that the friction force is enhanced and looseness is prevented. The anti-skid protrusions of the base increase friction of the contact face, and it is guaranteed that connection is still reliable and durable under the severe environment or high-frequency vibration.

Description

Technical Field

[0001] The utility model belongs to the technical field of locking nuts, and in particular relates to a locking nut with a coating. Background Art

[0002] In the prior art, traditional locking nuts mainly achieve locking functions by increasing the friction coefficient of threads or using anti-loosening washers, but these methods often have problems such as limited locking effect, easy damage or high cost. Especially in industrial applications that require high reliability and long-life connections, such as automobile manufacturing, aerospace, heavy machinery and other fields, higher requirements are placed on the performance of locking nuts.

[0003] Therefore, it is very necessary to invent a locking nut with a coating. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a locking nut with a coating, comprising a nut body, a threaded sleeve, an inner reduction groove, a reinforcement body, a positioning groove, a spring, a base, a conical sleeve and an anti-slip protrusion, the nut body and the threaded sleeve are integrally arranged together, the inner reduction groove is arranged between the nut body and the threaded sleeve, and the reinforcement body is arranged on the groove top of the inner reduction groove; the spring is arranged in the positioning groove opened on the nut body, the lower end of the spring is fixedly connected to the base, the conical sleeve and the anti-slip protrusion are integrally arranged on the base, and the conical sleeve is located in the inner reduction groove.

[0005] Preferably, the nut body is a hexagonal nut, the threaded sleeve is an inner diameter thread structure of the nut body, and an inner shrinkage groove allowing the tapered sleeve to pass through is provided between the threaded sleeve and the nut body.

[0006] Preferably, the retracted groove is located inside the positioning groove, and the upper end of the spring passes into the interior of the positioning groove and is allowed to perform telescopic movement in the positioning groove.

[0007] Preferably, the outer surface of the threaded sleeve and the inner surface of the tapered sleeve are provided with corresponding inclined surfaces, the tapered sleeve is located on the inner side of the spring, the deeper the tapered sleeve goes into the shrinkage groove, the greater the inward contraction amplitude of the lower part of the threaded sleeve, and the inner diameter of the tapered sleeve is larger than the inner diameter of the threaded sleeve.

[0008] Preferably, the base is located below the nut body, and a plurality of anti-slip protrusions are respectively provided on the lower surface of the base.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The utility model realizes dynamic locking of the nut by introducing a combination of a threaded sleeve and a tapered sleeve. In the process of tightening the nut body and the threaded sleeve, the threaded sleeve will gradually approach the tapered sleeve and allow the tapered sleeve to penetrate into the inner shrinkage groove. Under the mutual action of the tapered sleeve and the threaded sleeve on the inclined surface, the threaded sleeve gradually shrinks inward, thereby enhancing the friction between the bolt or screw, effectively preventing loosening, and improving the reliability and durability of the connection. The numerous anti-skid protrusions under the base increase the friction between the whole and the contact surface, further preventing the nut from accidentally loosening under vibration or impact. This design is particularly important, especially in harsh environments or high-frequency vibration working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the split structure of the utility model.

[0012] Figure 2 It is a half-section structural schematic diagram of the utility model.

[0013] Figure 3 It is a schematic diagram of the overall structure of the utility model.

[0014] In the figure:

[0015] The nut body 1, the threaded sleeve 2, the inner shrinkage groove 3, the reinforcement body 4, the positioning groove 5, the spring 6, the base 7, the tapered sleeve 8, and the anti-slip protrusion 9. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0017] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0018] As attached Figure 1 To Attachment Figure 3 As shown:

[0019] The utility model provides a locking nut with coating, comprising a nut body 1, a threaded sleeve 2, a retracted groove 3, a reinforcement body 4, a positioning groove 5, a spring 6, a base 7, a tapered sleeve 8 and an anti-slip protrusion 9, wherein the nut body 1 and the threaded sleeve 2 are integrally arranged together, the retracted groove 3 is arranged between the nut body 1 and the threaded sleeve 2, and the reinforcement body 4 is arranged on the groove top of the retracted groove 3; the spring 6 is arranged in the positioning groove 5 opened on the nut body 1, the lower end of the spring 6 is fixedly connected to the base 7, the tapered sleeve 8 and the anti-slip protrusion 9 are integrally arranged on the base 7, and the tapered sleeve 8 is located in the retracted groove 3. The outer surface of the locking nut is provided with a layer of anti-corrosion coating.

[0020] Embodiment 1:

[0021] Specifically, the nut body 1 is designed to be in the shape of a standard hexagonal nut, which is convenient for tightening and loosening using standard tools (such as a wrench). The threaded sleeve 2 is a part of the interior of the nut body 1, which forms an inner diameter thread structure for mating with a bolt or other threaded parts. An inner shrinkage groove 3 is designed between the nut body 1 and the threaded sleeve 2. The existence of this groove provides space for the insertion of the tapered sleeve 8, providing a basis for the subsequent realization of the dynamic locking function.

[0022] Specifically, the inner contraction groove 3 is not only located between the nut body 1 and the threaded sleeve 2, but also located inside the positioning groove 5. The positioning groove 5 is provided on the nut body 1 for installing and fixing the spring 6. The upper end of the spring 6 penetrates into the interior of the positioning groove 5 and is allowed to perform telescopic movement therein. This design enables the spring 6 to telescope as the tapered sleeve 8 goes deeper, thereby providing the necessary thrust.

[0023] Specifically, the outer surface of the threaded sleeve 2 and the inner surface of the tapered sleeve 8 are both provided with corresponding inclined surfaces. When the tapered sleeve 8 gradually penetrates into the inner contraction groove 3, these inclined surfaces will contact each other and generate a force. As the tapered sleeve 8 penetrates deeper, it will cause the lower part of the threaded sleeve 2 to shrink inward. This shrinkage effect enhances the friction between the nut and the bolt, thereby achieving a locking function. The inner diameter of the tapered sleeve 8 is designed to be larger than the inner diameter of the threaded sleeve 2 to ensure that the tapered sleeve 8 does not affect the fit between the threaded sleeve 2 and the bolt or other threaded parts.

[0024] Specifically, the base 7 is located below the nut body 1. It is not only a fixing point for the lower end of the spring 6, but also carries the anti-skid protrusions 9. On the lower surface of the base 7, there are many anti-skid protrusions 9. These protrusions increase the friction between the contact surface and further prevent the nut from loosening under vibration or impact. Even in harsh working environments, this design can ensure the stability and reliability of the nut connection.

[0025] Embodiment 2:

[0026] First, the base 7 is put on the bolt or other threaded component, and the anti-skid protrusion 9 provided on the base 7 contacts the structural surface where the bolt or other threaded component is installed, and the anti-skid protrusion 9 is used to increase the friction between the contact surface. The threaded sleeve 2 is installed on the bolt or other threaded component, and the nut body 1 is tightened with a tool. During the tightening process, the inner contraction groove 3 formed between the nut body 1 and the threaded sleeve 2 approaches the tapered sleeve 8, and the tapered sleeve 8 gradually penetrates into the inner contraction groove 3. The inclined surface of the tapered sleeve 8 interacts with the inclined surface of the threaded sleeve 2, causing the lower part of the threaded sleeve 2 to shrink inward, increasing the friction. During this process, the spring 6 is compressed under pressure and shrinks into the positioning groove 5.

[0027] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A locking nut with a coating, characterized in that: The invention comprises a nut body (1), a threaded sleeve (2), an inner contraction groove (3), a reinforcement body (4), a positioning groove (5), a spring (6), a base (7), a tapered sleeve (8) and an anti-slip protrusion (9); the nut body (1) and the threaded sleeve (2) are integrally arranged together; the inner contraction groove (3) is arranged between the nut body (1) and the threaded sleeve (2); the reinforcement body (4) is arranged on the groove top of the inner contraction groove (3); the spring (6) is arranged in the positioning groove (5) provided on the nut body (1); the lower end of the spring (6) is fixedly connected to the base (7); the tapered sleeve (8) and the anti-slip protrusion (9) are integrally arranged on the base (7); the tapered sleeve (8) is located in the inner contraction groove (3).

2. A locking nut with a coating as claimed in claim 1, characterized in that: The nut body (1) is a hexagonal nut, the threaded sleeve (2) is an inner diameter thread structure of the nut body (1), and an inner shrinkage groove (3) is provided between the threaded sleeve (2) and the nut body (1) to allow the tapered sleeve (8) to pass through.

3. The locking nut with coating as claimed in claim 1, characterized in that: The retracted groove (3) is located inside the positioning groove (5), and the upper end of the spring (6) penetrates into the positioning groove (5) and is allowed to perform telescopic movement in the positioning groove (5).

4. The plated locking nut according to claim 1, characterized in that: The outer surface of the threaded sleeve (2) and the inner surface of the tapered sleeve (8) are provided with corresponding inclined surfaces. The tapered sleeve (8) is located on the inner side of the spring (6). The deeper the tapered sleeve (8) goes into the shrinking groove (3), the greater the inward contraction of the lower part of the threaded sleeve (2). The inner diameter of the tapered sleeve (8) is greater than the inner diameter of the threaded sleeve (2).

5. The locking nut with coating as claimed in claim 1, characterized in that: The base (7) is located below the nut body (1), and a plurality of anti-slip protrusions (9) are respectively provided on the lower surface of the base (7).

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